Electrical transport signatures of metallic surface state formation in the strongly-correlated insulator FeSb2
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arXiv
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| Autori principali: | , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866929267724517376 |
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| author | Eaton, Alexander G. Popiel, Nicholas J. M. Xu, Ke-Jun Hickey, Alexander J. Liu, Hsu Hatnean, Monica Ciomaga Balakrishnan, Geetha Lange, Gunnar F. Slager, Robert-Jan Shen, Zhi-Xun Sebastian, Suchitra E. |
| author_facet | Eaton, Alexander G. Popiel, Nicholas J. M. Xu, Ke-Jun Hickey, Alexander J. Liu, Hsu Hatnean, Monica Ciomaga Balakrishnan, Geetha Lange, Gunnar F. Slager, Robert-Jan Shen, Zhi-Xun Sebastian, Suchitra E. |
| contents | We present local and nonlocal electrical transport measurements of the correlated insulator FeSb$_2$. By employing wiring configurations that delineate between bulk- and surface-dominated conduction, we reveal the formation of a metallic surface state in FeSb$_2$ for temperatures $\lessapprox 5$~K. This result is corroborated by an angular rotation study of this material's magnetotransport, which also shows signatures of the transition from bulk- to surface-dominated conduction over the same temperature interval as the local/nonlocal transport divergence. Notable similarities with the topological Kondo insulator candidate SmB$_6$ are discussed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_04550 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Electrical transport signatures of metallic surface state formation in the strongly-correlated insulator FeSb2 Eaton, Alexander G. Popiel, Nicholas J. M. Xu, Ke-Jun Hickey, Alexander J. Liu, Hsu Hatnean, Monica Ciomaga Balakrishnan, Geetha Lange, Gunnar F. Slager, Robert-Jan Shen, Zhi-Xun Sebastian, Suchitra E. Strongly Correlated Electrons We present local and nonlocal electrical transport measurements of the correlated insulator FeSb$_2$. By employing wiring configurations that delineate between bulk- and surface-dominated conduction, we reveal the formation of a metallic surface state in FeSb$_2$ for temperatures $\lessapprox 5$~K. This result is corroborated by an angular rotation study of this material's magnetotransport, which also shows signatures of the transition from bulk- to surface-dominated conduction over the same temperature interval as the local/nonlocal transport divergence. Notable similarities with the topological Kondo insulator candidate SmB$_6$ are discussed. |
| title | Electrical transport signatures of metallic surface state formation in the strongly-correlated insulator FeSb2 |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2403.04550 |